While you are a sitting president, you cannot stand trial until the process of impeachment is complete. Impeachment just means the house of representatives thinks there's enough evidence to have a full hearing in the Senate. Impeachment is not a trial and thus no official verdict can be made, only the Senate can do that.
There have been a few lawsuits citing that engaging in insurrection means he can't be put on the ballot but so far all the courts have said that secretaries of state have to put him on the ballot if he wins the primary.
Can I get this meme but with literally anyone else in the middle that isn't a piece of shit